[PATCH net-next 1/6] ptp: ocp: Fix the error handling path for the class device.
From: Jonathan Lemon <hidden>
Date: 2021-08-05 19:59:33
Subsystem:
networking drivers, opencompute ptp clock driver, ptp hardware clock support, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vadim Fedorenko, Richard Cochran, Linus Torvalds
Move the put_device() call to the error handling path, so the device is released after the .release callback, avoiding a use-after-free. Signed-off-by: Jonathan Lemon <redacted> --- drivers/ptp/ptp_ocp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 039d3a5c2a6f..261713c6e9a7 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c@@ -1381,7 +1381,6 @@ ptp_ocp_device_init(struct ptp_ocp *bp, struct pci_dev *pdev) err = device_add(&bp->dev); if (err) { dev_err(&bp->dev, "device add failed: %d\n", err); - put_device(&bp->dev); goto out; }
@@ -1391,6 +1390,7 @@ ptp_ocp_device_init(struct ptp_ocp *bp, struct pci_dev *pdev) out: ptp_ocp_dev_release(&bp->dev); + put_device(&bp->dev); return err; }
--
2.31.1